Back to Search Start Over

WSN-based passenger localization in severe NLOS environments using SDP

Authors :
Richard Weber
Uwe Gosda
Julia Ringel
Oliver Michler
Source :
IPIN
Publication Year :
2013
Publisher :
IEEE, 2013.

Abstract

In this work we use wireless sensor networks (WSNs) to estimate positions for automated passenger registration with the purpose of an electronic ticketing application in public transport systems. The network is capable of measuring distances between the network's sensor nodes by phase-of-arrival (POA) ranging. In our application, the requirements regarding position accuracy are very demanding, due to the ranging biases caused by severe non-line-of-sight (NLOS) environments, i.e. highly reflective radio propagation. Hence, we suggest semidefinite programming (SDP) as a robust optimization algorithm for the localization process and apply a NLOS mitigation technique from literature to a modified cost function that may help to meet these requirements. Finally the proposed algorithm is compared with state-of-the-art positioning techniques. Testing with simulated and real measured data shows that the proposed SDP estimator outperforms the other positioning algorithms substantially, particularly in realistic NLOS environments.

Details

Database :
OpenAIRE
Journal :
International Conference on Indoor Positioning and Indoor Navigation
Accession number :
edsair.doi...........6a05cb47015dd05261ec64df7d1d99fe
Full Text :
https://doi.org/10.1109/ipin.2013.6817900